Mosaicplasty: Eliminating a small piece of healthier articular cartilage and underlying bone from a non-fat-bearing Section of the joint; and afterwards putting in this piece to the injured site, thus restoring The graceful area with the cartilage. This problem is often because of the overuse with the knee, badly aligned bones https://www.theorthopaedicandpainpractice.com/what-are-cartilage-lesions/